Shock absorber



Oct. 2s.Y 1924. f 1,513,686

` CI` E. ARNESON SHOCK ABSORBER Filed Nov- 21, 1923 2 sheets-Smm l le; 5% Mv/ C. E. ARNESON SHOCK ABSORBER 2 sheets-sheet r;

Filed INov. 2l, 1923 z O .Il n o. D. n g

Patented Oct. 28, 192.114.

UNITED.- STATES PATENT? 'ortica-f;

cHAnLEs n Ammsom'orsroux rants, scura naxbm'i.

'sHocx Ansonnnn. i

Application led November 21, 1923. Seriali No. 676,111.-

To all (whom it may concern:

Beit known that I, CHARLES E. AnNEsoir, a cltlzen ofthe United States, residing at l Sioux AFalls, inthe county of Minnehaha and State of 'South Dakota, have invented vide an improved structure whichaffords easy riding-qualities ofthe vehicle and which efiects corresponding easy and gradual checking of rebounding of the springs. I

r A further object `oi? the invention is to providea shock -absorber which operates with equal eiliciencyand which can be appli'ed to either the front or rea-r springs Vot 'l the vehicle, or to both.

A still -furtherobject of the invention is to provide a device of this type which is of sinaple and economical construction.

he invention has still further and other objects, which will be later set forth and A ma ifested by and inthe course of the followin/g description.

" In the drawings -Figure l, is aside elevation, showing the inventionv as applied to the front springs of a vehicle;

Figure 2, is a like view, showin the invention as applied'to the rear spr ugs of a vehicle;

Figure 3, is a 'Section on une a-s 'of Figure 1; lFigure 4, is a section on line i-Jl of Figure 2' y Fighre 5, is an enlarged s ectional view of the device shown in Figure 1, and

Figure 6, is a similar view of Figure 2'. In proceeding in accordance with the present invention and referring. to Figures 1, 3 and 5 ofthe drawings, amain cylinder 1 is provided to one side of which a smaller cylinder 2 is secured, a port 3 at the lower ends of the cylinders establishing communication between the two. A piston 4 operates within the smaller cylinder 2 and has a rod 5 connected thereto, the latter sliding through a stutiing box 6. The upper end 'of the smaller cylinder 2 is equipped with an air pprt 7. A. body of'oil 8 is placed within t e cylinders. As illustrated in Figures l and 3 of the drawings, the cylinders are attachedby bolts 9 to the vehicle frame `adjacent to the front of the latter and at an incline, a cable or other suitable connection 10 being employed wlfich'at one end is connected t the piston rod 5, .and atits -apposite end is secured by a clip 'l1 to the.

axle 12 which latter supphrts the elliptical front springs 13. The bottonr'o the cylinder 1, is closed by a removable plug 2*.

In this form of the invention it will: be

seen thatv upon rebounding movement of the.

frame, the piston will engage the part of the' liquid in the cylinder 2 anddue to the constrictednature of the port 3, the liquid will be slowly .forced into the cylinder 1, and will In theform of the invention depicted in' Figures ,2, 4 and 6' of the draw1ngs,,the

be cushioned b the air which is compressed lar er cylinder 14: has a check valve'contro led port 15, while thesmaller cylinder 16 -is-completely closed at each of its ends. In this construction, the piston 17 has its rod 18 pivoted to a 4lever 19, which latter -is fixedly secu. ed to a shaft 20. The shaft 20 is journale in bearings 21 carried by the cylinder Hand has a downwardly inclined lever arm 22 ixedly secured thereto, 'Y

thelower end of the arm 22 being secured toone end of alexible strap 23, the o posite end of the strap being. attached to tf. e axle housing 24 which latter is connected to the rear springs 25 as is customary in the art. As illustrated in Figure 4 of the drawings, the cylinders 14 and 16. are bolted at 25 to the inner side .faccof the side bar of the frame 10 at the rear of the latter. Inthis form of the. invention upon rebounding movement 4of the frame, the piston 17 which engages the surface of the body of oil or other liquid 26 in the cylinder 16 will-be held by. the strap 23 and will force the liquid through the constricted port 27 into the lar er cylinder 14 and. u ward movement o the liquid in the cylinder 14 will cushion the air in the space between the surface of the liquid andthe closed top of cylinder 14.

As Shown in Figure 5, an air inlet valve ilo cylinder 1, and'formed to enable .a pumpy 2 A i,aesc...

' to be connected thereto to supply compressed air aboveI the oil surface So as to regulate the resistance which'the air offers to the piston movement,A as desired. The'valve 1 5 .in Figure 6, is employed .for the same 1. In a shock absorber, a pair of cylinders i of` varying diameters having al port estabd -1o lishing communication between the lower ends thereof, apiston in the smaller cylinder having a rod extending downwardlythrough the bottom ofthe smaller cylinder andthe latter'having an air outlet at its upper end, means to connect the piston'to the front axle of a vehicle, means to support the vcylinders from the frame of a vehicle, and a body of liquid in' the cylinders.

, 2. In a -shock absorber, a Ipail" )of adjacent cylinders having` a re atively# small port establishing communication4 between I vthe lower ends thereof, a body of liquid'in I thevcylinders, one of the cylinders havin a piston therein operating. from above an downwardly against the surface of the 3. In a shock absorber, a. pair of cylinders of varyingdiameters haviug a port establishing communication between the lower ends thereof, a piston in the smaller cylinder having aV rod ex'tendin'g downwardly through the bottom of the smaller cylinder and the latter having an air outlet at its upper end, means to connect the piston to the front axle of a vehicle, means to support' the cylinders from the frame of a vehicle, a. body of liquid in the cylinders, and a .valve controlled air inlet lad1acent the upper end ofv the larger cylinder above the surface of the liquid therein.v

' In testimony whereof I affixl my signature. I

CHARLES E. AaNEsoN 

